Loose reed stopping mechanism for looms



Aug. 30, .1932. v. LINDSJO LOOSE REED STOPPING MECHANISM FOR LOOKS FiledOct. 7. 1931 2 Sheets-Sheet INVENTOR. VEENEE L/NDSJO.

WIT/v55 s CLINTON 6. Cosme/v.

A TTORNE Y.

Aug. 30, 1932. v LINDSJQ 1,874,555

LOOSE REED STOPPING MECHANISM FOR LOMs Filed Oct. 7, 1931 2 Sheets-Sheet2 .W/T/vEss INVENTOR. CLINTON S. Cosme/v. VEENOE L/NDsuo ATTORNEY.

Patented Aug. 30, 1932 UNITED STATES "PATENT OFFICE TION, OF HOPEDALE,,MASSACHUSETTS, A. CORPORATION OF MAINE LOOSE REED STOPPING MECHANISMFOR LOOMS Application filed ctober 7, 1931. Serial No. 567,447.

This invention relates to looms. and more particularly to a yieldingreed and associated devices for stopping the loom when a shuttle becomestrapped in the shed.

Looms of the type herein involved commonly include a lay mounted uponswords for reciprocation towardand from the fell of the cloth beingwoven and a reed carried between the lay and a hand rail for beating ineach successive pick of filling. It is common to mount the reed so thatit is capable of yielding when the shuttle fails to pass entirelythrough the shed and becomes caught or trapped therein. This yielding ofthe reed prevents the otherwise inevitable breaking out of the warpthreads, or ,smash. Various connections from the yielding reed,independent of the reed clamping mechanism, have heretofore been devisedfor stopping the loom when a shuttle becomes trapped. However, suchconnectionshavebeen needlessly complicated and expensive and I propose;to simplify the'structure considerably by controlling the loom stoppingdevices directly from the yielding reed clampingmechanism. I furtherpropose to provide a mechanism which is more reliable in operation thanthose hitherto known.

It is accordingly an object of my invention to provide a simplifiedmechanism for yieldingly clamping a reed in its normal po sition, and adagger controlled directly by the reed clamping mechanism for operatingsuitable connections to stop the loom when the reed yields. v

A further object of my invention is to provide a yieldingly actuatedclamping bar for normally clamping a reed in position on a lay and amanually operable latch for releasing the clamping bar and latching itin released position.

' A further object of myinvention is to com? bine a yielding reed with ayielding back box plate tothereby eliminate the necessity for the usualprotection mechanism.

Other objects will, in part, be hereinafter more specifically enumeratedor will become obvious as the description proceeds.

Referring more particularly to the drawings:

Fig. l is a perspective view of certain parts of a loom embodying myinvention;

Fig. 2 is a plan view of the mechanism shown in Fig. 1, and

Fig. 8 is a sectional elevation thereof, the parts being shown intheposition they assume when the loom is stopped by a shuttle beingtrapped in the shed.

As shown, a lay 1 is mounted upon swords 2 for reciprocation toward andfrom the fell 3 of the cloth being woven. Theswords are provided withextensions 4: for supporting a hand rail 5. A reed 6 is pivotallymounted at its upperedge in a groove 7 in the hand rail and is'yieldingly clamped against a ledge 9 on the lay by means ofa lockingbar 10. This freed and hand rail construction may conveniently be thesame as thatdisclosed in my copending application Serial Number 525,073,

filed March 25,1931. The locking bar 10 is carried by spaced arms 11fixed upon a rocking member herein shown as a'rock shaft 12 extendinglongitudinally of the lay and mounted in bearings 13, 13 thereon.

A coil spring 14: surrounding the rock shaft has one end fixed to abearing 13 and the other end fixed to a collar 15 fast on the rockshaft. The spring thus serves to yieldin turnmounted for longitudinalsliding movements toward and from the front of the loom. However, whenthe reed yields the dagger is raised to engage the stop and thus, asthelaybeats up, slide the rod forwardly.

The rod 20 operates any suitable, usual connection for stopping theloom, such as link 21, pivoted to shipper lever 22. The shipper lever ispivoted on a stud 23 for movements between. an on position deter- ZVERNER LINDSJO, OF HOPEDALE, MASSAGHUSETTS, ASSIGNOR TO DRAPER CORPORA-Such means comprises, 7

mined by a stop 24 and the ofi position in which it is shown in Fig. 3.Any usual means, such as rods 25, 26 pivoted on the shi er lever, serveto control the clutch an rake or other power controlling elements of theloom.

It will readily be seen from inspection of Fig. 3 that when a shuttle 27becomes trapped it may force the reed rearwardly entirely past lockingbar 10, in which event spring 14 would return the bar toits normalpositlon, thus lowering the dagger 18 out of the path of lug 19 andpreventing the initiation of the loom stopping operation. In order toprevent such failure of operation I have provided a latch member forautomatically latching the dagger in loom stopping position once it isso positioned. This latch member, 28, is pivoted as at 29 to an arm 30which may be fixed to the rock shaft, or may be attached directly to thedagger. A spring 31 serves to urge the member 28 forwardly to cause aprojection 32thereon to engage over the edge of guide 33 when thedagger,and thereby the latch member, is raised.

. This latch member 28 serves an additional purpose. Being provided witha finger piece 34 the latch is manually operable, when the parts are intheir normal position shown in Fig; 1, to rotate the rock shaft 12 andthereby release the locking bar 10, and latch it in released position.This feature is particularly advantageous when it is desired to insertor remove the reed.

The lay is provided, at each end, with a shuttle box comprised of afront wall 35 and V a rear wall 36. It may so happen at times that theshuttle will be trapped partly in the shed and partly in the shuttlebox, in which event a smash would occur in spite of the yielding reedmounting. It has been customary to provide an additional stoppmmechanism, commonly of the protector ro t pe, controlled by the presenceor absence of the shuttle in the box to prevent damage to the parts whenthe shuttle does not box properly. However, by combining the yieldingreed with a rearwardly yielding back box plateI have eliminated thenecessity for this additional stopping mechanism.

It is notnecessary that the entire box plate yield, and I haveaccordingly provided the relatively rigid outer end portion 37 thereofwith a rearwardly yielding inner end portion 38 pivotally connectedthereto by means of a spring hinge 39. Thus, when a shuttle is trapped,as shown in Fig. 2, partly in the shed and partly in the box boththereed and the box plate yield rearwardly and the loom will be stopped bythe dagger 18.

The operation of the mechanism is, briefly, as follows: I

The shuttle is picked through the shed while the lay is movingrearwardly and ordinarily has passed entirely through the shed and boxedon the other side by the time the lay has reached its mid position onits forward movement. In this event, the arm 16 passes under lug 17 thuspositively holding rock shaft 18, and locking bar 10 in the os1- tionshown in Fig. 1 to thereby securely ock the reed for beating in the pickof filling laid by the shuttle. Dagger 18 passes underneath stop lug 20and the connections to the power controlling elements are not disturbed.

However, should the shuttle be trapped within the shed, as shown in Fig.3, it will bear against the reed as the lay beats up and cause the reedto move locking bar 10 rearwardly against the action of spring 14. Latchmember 28 will be raised and the projection 32 will hold the same inraised position. Since movement of the locking bar rearwardly serves toraise thedagger 18 to loom stopping position continued movement of thelay forwardly will cause the dagger To operate the connections forstopping the 00m. a

Should the shuttle be trapped partly in the shed and partly in the boxboth thereed and the back box plate will yield rearwardly, and the loomwill be stopped as before.. i It is to be understood that while I haveillustrated and described the preferred embodiment of my invention,numerous changes in the details of the construction may be resorted towithout departing from the spirit of the invention as defined in theappended claims.

I claim: r a I s 1. In a loom, the combination of a lay with a reedmounted thereon to yield when a shuttle is trapped in the shed, arocking member mounted on and extending longitudinally ,of the lay, armson said rocking member car rying a reed lockingbar, a spring acting tonormally hold the bar in reed lockingposition but yieldable to allow thereed to move when a shuttle is trapped, means for positively holding therocking member against movement after the lay has reached apredetermined point in the path of its movement, a dagger carried by therocking member, and connections operated'b the dagger for stopping theloom when tie rocking member is moved by the yielding of the reed- 2. Ina loom, the combination of a lay with a reed .pivotally mounted thereonto yield when a shuttle is trapped in the shed, a rock shaft mounted onthe lay and extending 1ongitudinally thereof, a plurality of. spacedarms on said rock shaft carrying a locking bar, a spring acting on therock shaft to normally hold the bar in reed locking position butyieldable to allow the reed to move when a shuttle is trapped in theshed, means'for positively holding the rock shaft a inst rotation whilethe reed is beating-in t e filling, a. dagger carried by the rock shaft,and a slidable stopping rod actuated by the dagger for an m MMML?.nmi...ii.a.. aaaanm. v "in a initiating a stopping of the loom when therock shaft is rotated by the yielding of the reed.

3. In a loom, the combination of a lay with a reed mounted thereon toyield when a shuttle is trapped in the shed, a locking bar engaging thereed and normally clamping it in operative position on the lay, and amanually operable latch carried by the lay for releasing the locking barand latching it in released position.

4. In a loom, the combination of a lay with a reed pivotally mountedthereon to yield when a shuttle is trapped in the shed, a rock shaftmounted on and extending longitudinally of the lay, arms on said rockshaft carrying a reed locking bar, a spring acting to normally hold thebar in reed locking position but yieldable to allow the reed to movewhen a shuttle is trapped, and a manually operable latch member carriedby the lay connected to the rock shaft for releasing the looking bar andlatching it in released position.

5. In a loom, the combination of a lay with a reed mounted thereon toyield when a shuttle is trapped in the shed, a locking bar normallyyieldingly holding the reed in operative position but movable by thereed when a shuttle is trapped, a dagger controlled by movements of thelocking bar, connections actuated by the dagger for stopping the loomwhen the locking bar is held out of reed locking position, and anautomatically operating latch for holding the dagger in loom stoppingposition independent of the movement of the. lay once it is sopositioned.

6. In a loom, the combination of a lay with a reed mounted thereon toyield when a shuttle is trapped in the shed, a dagger movable from loomrunning to loom stopping position by the yielding of the reed, and v aseparate latch member automatically latching the dagger in loom stoppingposition upon its movement thereto by the reed.

7. In a loom, the combination of a lay with a reed mounted thereon toyield when ashuttle is trapped in the shed, a rocking member mounted onand extending longitudinally of the lay, arms on said rocking membercarrying a reed locking bar, a spring acting to normally hold the bar inreed locking position but yieldable to allow the reed to move when ashuttle is trapped, a loom stopping dagger moved to stopping position bymovement of the locking bar, and an automatically operating latch forholding the locking bar in released position and the dagger in loomstopping position.

8. In a loom, the combination of a lay with a reed mounted thereon toyield rearwardly when a shuttle is trapped in the shed, and a shuttlebox carried by the lay at one end thereof, the shuttle box including aback box plate at least a portionof which is yieldable rearwardly, thereed and the back box plate both yielding, to prevent a smash, when ashuttle is trapped partly in the shed and partly in the box.

9. In a loom, the combination of a lay with a reed mounted thereon toyield rear wardly when a shuttle is trapped in the shed, and a shuttlebox carried at one end of the lay, said shuttle box including a back boxplate having a rearwardly yielding inner end portion cooperating withthe yielding reed to prevent a smash when a shuttle is trapped partly inthe shed and partly in the box.

10. In a loom, the combination of a lay with a reed pivotally mountedthereon to yield rearwardly when a shuttle is trapped in the shed, and ashuttle box carried by the lay at one end thereof, said shuttle boxincluding a back box plate having a relatively rigid outer end portionand an inner end portion pivoted to the outer end portion by means of aspring hinge to yield rearwardly,

whereby both the reed and the inner end portion of the back box platewill yield to prevent a smash when a shuttle is trapped partly in theshed and partly in the box.

VERNER LINDSJO.

